Burglar-alarm lock.



No. 632,664. Patented Sept. 5,1899.

E. .M. WAGNER BUBGLAR ALARM LOCK.

(Application filed Feb. 6, 1899.)

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No. 632,664. Patented Sept. 5, I899. E. M. WAGNER.

BUBGLAR ALARM LOCK.

(Application filed Feb. 6, 1899.)

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No. 632,664. Patented Sept. 5, I899. E. M. WAGNER.

BURGLAR ALARM LOCK.

[Application filed Feb. 6, 1899.) 1.

(No Model.) 3 Sheets-Sheet .3,

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NITED STATES PATENT Orricn.

EDWARD M. \VAGNER, OF DENVER, COLORADO.

BURGLAR-ALARM LOCK.

SPECIFICATION forming part of Letters Patent No. 632,664, datedSeptember 5, 1899.

7 Application filed February 6,1899. Serial No. 704,708. (No model.)

To (Z5 whom it may concern:

Be it known that I, EDWARD M. WAGNER, a citizen of the United States ofAmerica, residing at Denver, in the county of Arapahoe and State ofColorado, have invented certain new and useful Improvements in Burglar-Alarm Locks; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the figures of referencemarked thereon, which form a part of this specification.

My invention relates to a burglar-alarm lock, my object being to providea combined door-lock and burglar-alarm so arranged that the turning ofthe knob-spindle sets off the alarm. The spindle passes through the gongor bell, which may be mounted in any suitable manner. Thenormally-locked springactuated mechanism for operating the hammer orclapper is released by turning the spindle. 1

I do not limit the invention to any specific construction of mechanismfor operating the bell hammer or clapper. The mechanism illustrated inthe drawings and herein described is similar to that used in alarmclocksand will answer every purpose, though any other suitable mechanism maybe employed.

In the drawings, Figure 1 shows a lock equipped with my improvements,one side of the case being removed. Fig. 2 illustrates the lock viewedfrom the opposite side. Fig. 3 is a vertical section taken through theescutcheon-plates on a plane parallel with the spindle. In this view oneend of the lockcasing is removed, the parts within being shown inelevation. Fig. 4: is a detail view of the latch-bolt. Fig. 5 is a faceview of the escutcheon-plate employed in connection with the key forwinding the alarm mechanism. In this view the winding-key is shown insection and a vertically-sliding locking device in elevation. Fig. 6 isa detail view of'the locking device. Fig. 7 is a detail view of thesliding plate for locking the alarm mechanism against movement. Thisplate is shown in connection with toggle members for operating it. Fig.8 is a side view of the lock,

showing the relative position of the escutcheon-plates. Fig. 9 is afragmentary View of the inner escutcheon-plate with the knob removed.This view shows the sound-open ings. Fig. 10 illustrates the swiveljointconnection between the two'spindle parts.

Similar reference characters indicating corresponding parts in theviews, let the numeral 5 designate a square two-part spindle. Theseparts are connected together in the center by a swivel-joint orotherwise, whereby each part is allowed to move independently of theother part. Upon each spindle part is mounted a cam 6 for operating thelatch-bolt 7. The outer cam is pivotally connected with a link 8,forming, with another link 9, a toggle-joint. These toggle links ormembers are connected with each other by a pin 10. The link 8 isconnected with the cam by a screw-pin 12, while the link 9 is connectedwith the locking-plate 13 by a screw-pin 14. The plate 13 slides betweenguide-lugs 15, attached to the lock-casing. Its free extremity is forkedor bifurcated (see Fig. 7) to straddle the spurwheel 16. One arm of thefork is adapted to engage a recess 16 formed in the edge of the wheel 16adjacent the teeth, the thickness of this wheel being increased, asshown at 16, for the purpose. This plate 13 is normally held in thelocked positionthat is to say, in engagement with the recess 16 of thewheel 16-by a leaf-spring 17. The wheel 16, whose periphery is providedwith pins or sprockets, is loosely mounted on a shaft 18, journaled inthe casingplates. A coil -spr1ng 19 is attached to this shaft at oneextremity, its opposite extremity being secured or anchored to a pin 20made fast to the lock-casing. This spring is coiled around the shaftadjacent the wheel 16 on one side. On the opposite side of the wheel 16is located a ratchet-wheel 21, whose teeth are engaged by a dog 22,pivotally mounted on the wheel 16, and held in operative position by aspring 23, also mounted on the wheel 16. The coil-spring 19 is wound ortightened by applying a key 24 to the shaft 18 and turning the shaft inthe direction indicated by the arrows in Figs. 1 and 2. The dog 22,cooperating with the ratchet-wheel, locks the spring against recoil aslong as the spur-wheel 16 is locked by the key-plate 13.

The teeth of the spur-wheel 16 engage the pins or bars 25 of alantern-wheel 25, mounted on a shaft 25, to which is attached a toothedescapement-wheel 26, engaged by a pallet 27, to which is attached oneextremity of an arm 28, whose opposite extremity is provided with athreaded opening 28 into which may be screwed from either side a hammeror clapper 29, which projects through a slot 30, formed in one side ofthe casing. This hammer is located in suitable proximity to the bell orgong 31, which, as shown in the drawings, is mounted on the spindle 5.It may, however, be supported in any other suitable manner. This gong islocated between the lock-case 32 and the escutcheon-plate 33, which isprovided with openings 33, surrounding the spindle just outside the bell31, whereby the sound of the hammer onthe gong may be easily heard.

The operation of the mechanism is as follows: As the outer knob 34, orthat remote from the gong, is turned the spindle 5 and the cam 6 areactuated sufficiently to withdraw the plate 13 from the spur-wheel 16through the instrumentality of the togglejoint members 8 and 9. As soonas this occurs the recoil of the spring 19, acting on the wheel 16,rotates the latter, which operates the lantern-wheel 25, the toothedescapementwheel 26, and the pallet 27, which imparts an oscillatingmovement to the hammer-arm 28, causing the hammer to strike the gong andsound the alarm. After the plate 13 has been withdrawn from engagementwith the wheel 16 the latter will make one complete revolution beforethe locking-plate can return to the locking-recess 16 of the wheel. Onerevolution of this wheel 16 will operate the alarm mechanismsufficiently for all practical purposes.

If it is not desired to operate the alarm mechanism when the knob 34 isturned, the

said mechanism may be locked against operation through theinstrumentality of the key 24, which is provided with grooves 24,adapted to receive one extremity of a sliding dog 35, mounted on a smallescutcheon plate 36, whose relative position is illustrated in Fig. 8.Behind the dog 35 is located a spring 37, which retains the dog in theraised or unlocked position until moved downwardly. The plate 36 isprovided with guides 38, which hold the dog in operative relation withthe plate. The dog 35 is provided with a stop 35. It is evident thatwhen the dog 35 engages the key 24 the latter as well as the shaft 18,the parts mounted thereon, and the other elements of the alarm mechanismwill be locked against movement independently of the locking-plate 13.The keeper ends of the shaft 18 are threaded, as shown at 18, to receivethe key 24, which may be screwed thereon and detached therefrom at will.

The toggle-joint-operated plate 13 may, if desired, be actuated from thekey-operated plate 39. In this event the toggle-link 8 will be connectedwith the bolt at a point 40 and the plate would move between theguide-lugs 15 attached to the lock-casing. The bolt 39 is cut away, asshown at 39, to allow the togglejoint to operate. It is evident that thelocking-plate 13 would then act on the spur-wheel 16 in the same manneras when connected with the cam on the spindle, as heretofore explained.The locking-plate 1 3 is reversible, being provided with two arms 13,either of which will engage and lock the spur-wheel against rotation.This locking-plate is provided with an opening 13 to receive theextremity of the spring 17. The position of the bell-hammer may also bereversed to permit the attachment of the bell or gong to either spindlepart at pleasure.

It will be observed that both lugs 6 are apertured to receive thescrew-pin 12, whereby the toggle connection for actuating thelocking-plate 13 may be applied to either lug indifferently; also, thatboth sides of the easing 32 are provided with a slot 30, through whichthe hammer-arm 29 projects. By reason of these features the lock becomesreversible.

Having thus described my invention, what I claim is- 1. In analarm-lock, the combination with the knob-spindle, of a hell or gongmounted on the spindle, a hammer, and suitable mechanism for actuatingthe hammer, said mechanism being arranged to be set OK or actuated bythe movement of the spindle.

2. In a combined door-lock and burglaralarm, the combination with acasing and knob-spindle, of a hell or gong mounted on the spindleoutside of the casing, a hammer, and hammer-actuating mechanism inclosedby the casing, which is slotted to allow the hammer to protrude toengage the bell, the hammer actuating mechanism being arranged to be setoff by a moving part of the lock.

3. The combination with the lock mechanism, of alarm mechanismcomprising a spurwheel, a coil-spring, a ratchet and dog for winding thespring, a lantern-wheel, a toothed escapement-wheel, a pallet, a hammerconnected with the pallet, a gong or bell located in proximity to thehammer, and a spring-held sliding device normally engaging and lockingthe spur-wheel against movement, said looking device being connectedwith a moving part of the lock whereby the operation of the latteractuates the locking device and releases the alarm mechanism.

4. The combination with a lock mechanism, lock-casing and aknob-spindle, of a bell or gong mounted on the spindle, a hammer locatedin proximity to the bell, normal1ylocked, spring-actuated mechanism foroperating the hammer, said mechanism being located entirely within thelock-casing, and a suitable connection between said mechanism and a partof the lock, whereby the movement of the lock part releases thehammer-actuating mechanism.

5. The combination with the knob-spindle, of abell or gong mountedthereon, a hammer located in suitable proximity to the gong, andnormally-locked spring-actuated mechanism for operating the hammer, saidmechanism being connected with a moving part of the lock whereby, as thelatter is operated the hammer-operating mechanism is released.

6. In a combined lock and burglar-alarm, the combination with the lockmechanism, and easing inclosing said mechanism, and a knob-spindle, of ahell or gong mounted on the spindle, a bell-hammer, hammer-actuatingmechanism, arranged to be set off by a moving part of the lock, and anescutcheonplate located adjacent the bell or gong and provided withopenings that facilitate the escape of the alarm sound.

7. The combination with the knob-spindle and the latch-operating cam, ofa bell or gong mounted on the spindle, a vibrating hammer located inproximity to the bell, spring-actuated mechanism for operating thehammer, a device for locking said mechanism against movement, and atoggle-joint connection between said device and the cam on the spindlewhereby the movement of the spindle actuates the said device andreleases the hammeractuating mechanism.

8. In a combined lock and burglar-alarm, the combination with theknob-spindle and the latch-bolt-operating cam, of a bell or gong mountedon the spindle, a vibrating hammer located in proximity to the bell, ashaft journaled in the lock-casing, a spur-wheel loose on the shaft,aratchet-wheel fast on the shaft, a locking-pawl mounted on thespur-wheel and engaging the ratchet-wheel, a lanternwheel connected withthe spur-wheel,a toothed escapement-wheel operated by the lanternwheel,a pallet engaging the escapement-wheel and connected with the hammer, adevice engaging the spur-wheel and looking it against movement, and atoggle connection between said device and the latch operating camwhereby the movement of the spindle releases the hammer-operatingmechanism.

In testimony whereof I affix my signature in presence of two witnesses.

EDXVARD M. W'AGNER.

Witnesses:

NELLIE G. DANIELS, J. H. BOCKENFELD.

